package cn.v2_1;

import java.io.*;
import java.net.ConnectException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

/**
 * 聊天室 Version 2.1
 * 客户端基本不变：关闭socket、拓展增加IP
 *                         1.私有化IP
 *                         2.构造器，当前IP进行赋值
 *                         3.任意位置使用IP【读入知道对方IP】
 *
 */
public class Client {
    private Socket socket;
    //1.私有化IP
    private String ip;
    public Client(){
        try {
            socket=new Socket("172.20.12.48",0404);
            //2.确定传入IP就是当前IP地址
            ip=socket.getInetAddress().getHostAddress();
        } catch (SocketException e){
            System.out.println("客户端链接被重置");
        }catch (UnknownHostException e){  //用户地址出问题异常
            System.out.println("IP地址有问题，请询问客户端！");
        } catch (IOException e) {//IO异常：链接失效，客户端主动退出了
            System.out.println("客户端主动退出了：断开链接");
        }
    }
    public void start(){
        PrintWriter pw=null;  //置空流--赋值--关流
        try {

            pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);

            System.out.println("客户端用户：请输入文字：");
            Scanner input = new Scanner(System.in);  //测试--控制台输入文本
            while (true) {  //死循环--一直与服务器说话
                String say = input.nextLine();
                pw.println("客户端说："+say);   //写出  一行行文字
                System.out.println("写出完毕");
            }

        }catch (UnsupportedEncodingException e){
            System.out.println("客户端与服务器端，字符集不一致！");
        }catch (IOException e) {
            System.out.println("客户端断开了链接！");
        } finally {
            //关闭流   关闭socket
            if (pw != null)
                pw.close();
            if(socket!=null&&!socket.isClosed()){
                System.out.println("客户端关闭成功！success~");
                try {
                    socket.close();
                } catch (IOException e) {
                    System.out.println("客户端关闭失败");
                }
            }
        }
    }

    public static void main(String[] args){
        Client client=new Client();
        client.start();
    }

}
